Nickeline and Hematite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
5.00-5.30
  
Fracture
Conchoidal, Uneven
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
  
Cleavage
{1010} Imperfect, {0001} Imperfect
  
None, may show partings on {0001} and {10 1 1}
  
Mohs Hardness
5-5.5
  
6
  
Chemical Composition
Not Available
  
Fe 2O 3Arthur Thomas , Gemstones (2009)
  
Nickeline and Hematite Chemical Formula
While comparing Nickeline and Hematite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Nickeline and Hematite chemical formula.
>- Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Nickeline and Hematite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nickeline and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nickeline and Hematite Optical Properties during the identification of gemstone. Specific gravity of Nickeline is 5.00-5.30 whereas that of Hematite is 5.00-5.30.